turn the key and car won't start! lights and radio work... on 2004 BMW 325xi

turn key lights come on, radio works, etc. but car will not start. doesn't even make a sound. tried to jump it but no luck. any suggestions?

Asked by for the 2004 BMW 325xi
Start with a new battery, Just because the lights and radio work doesn't mean the battery is good. Your battery has 6 cells of a little over 2 volts each and if one cell shorts out it will still power some things but won't have the amps needed to engage the starter
1 more answer
Take to dealer and reset the ECU it's a security thing with BMW cost bout 110.00.